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тАО11-28-2008 07:46 AM
тАО11-28-2008 07:46 AM
I am facing one problem and its description is as follows:
System Details:
EVA4400 ├в only FP1 ports were connected to SAN switch; FP2 are not connected
RX2660 ├в LUNs from EVA4400 were allocated to this server
Problem: When rebooting the server storage mount points were not mounting; /etc/fstab is ok. Syslog says cannot query physical volume cxtydz.
And also when I am running #ioscan -fun then it is not showing the SAN storage Disks(LUNS) device files ,and thus it compelled me to run
#ioscan -fn, to manually make it to detect LUNS.
Then #vgchange -a y vg'sname
#mount -ae
But if server is HALTED and then powered ON all external mount points were mounted.And i didn't need to run any commands loke ioscan -fn or vgchange -a y or mount .
Plz suggest me your solutions and here i am attaching zip file for assistance in diagnosis.
Solved! Go to Solution.
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тАО11-28-2008 08:18 AM
тАО11-28-2008 08:18 AM
Re: Problem of LUN Detection over rx2660
1.Did the LUN have alternath path configured.
2.check for the FC Zoning to the LUN configured.
3.reboot once the machine.
go for #ioscan -fnC disk,
#insf -eH
4.reboot the machine again .check for the errors.
still face the problem,revert back with the errors.
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тАО11-29-2008 09:28 AM
тАО11-29-2008 09:28 AM
Re: Problem of LUN Detection over rx2660
It doesn't has any zoning but yes it has Alternate path configured, but all the path along with alternate path doesn't appear after reboot until & unless i run command ioscan -fn.
I will try your sugeested method of insf -eH and then will reply to you.But before to that if u have any thing then plz suggest me .
Thanks ...
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тАО11-29-2008 09:55 AM
тАО11-29-2008 09:55 AM
Re: Problem of LUN Detection over rx2660
what about AUTO_VG_ACTIVATION in /etc/lvmrc . if you dont have a cluster system it must be equal to 1
Hasan
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тАО11-29-2008 05:56 PM
тАО11-29-2008 05:56 PM
SolutionThe Zoning I mentioned earlier is, to be done from Storage part.
From OS part we are making use of it as alternate link.
Please discuss with storage team to check all the path is working for a LUN ( Example - 2 or 3 path per LUN).
Thanks Hasan ,
To bring notice of that.
In case of clustered VG. The Non-rootvg to be activated automatically.
please check thatone too.
Thanks,
Analyst.
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тАО11-29-2008 08:55 PM
тАО11-29-2008 08:55 PM
Re: Problem of LUN Detection over rx2660
Do you have AUTO_VG_ACTIVATE=1 in '/sbin/lvmrc' or do you have this set to zero (0) where you must delare the volume groups you want activiated in '/etc/lvmrc' in its 'custom_vg_activation()' function?
Check for any errors in /etc/rc.log
I am guessing that the disks for this volume group are not visible by the server early in the boot process. Some process attaches them later on and by then it is too late.
Also do you have a serviceguard package set up in this server?
Thanks,
Johnson
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тАО12-02-2008 01:24 AM
тАО12-02-2008 01:24 AM
Re: Problem of LUN Detection over rx2660
Analyst: I have done zoning but still facing the same problem.
Hasan/Johnson:Yes ,its /etc/lvmrc has AUTO_VG_ACTIVATE= 1".
And 1 more thing that it doesn't have any cluster..
Thanks
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тАО12-02-2008 02:13 AM
тАО12-02-2008 02:13 AM
Re: Problem of LUN Detection over rx2660
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тАО12-02-2008 02:44 AM
тАО12-02-2008 02:44 AM
Re: Problem of LUN Detection over rx2660
John
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тАО12-03-2008 05:03 AM
тАО12-03-2008 05:03 AM
Re: Problem of LUN Detection over rx2660
Yes one such multipathing software is installed but would it has any role in this LUN detection problem??
Yes john,
We are also thinking of upgrading SAN switch firmware but EVA controller firmware is the latest one.
Thanks
Asif khan